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[82.64.73.52]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-488d67b4903sm64176515e9.5.2026.04.11.10.25.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 11 Apr 2026 10:25:38 -0700 (PDT) From: Dave Penkler To: gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org Cc: stable@vger.kernel.org, Dave Penkler Subject: [PATCH 3/6] gpib: Don't use extended registers Date: Sat, 11 Apr 2026 19:25:08 +0200 Message-ID: <20260411172511.26546-4-dpenkler@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260411172511.26546-1-dpenkler@gmail.com> References: <20260411172511.26546-1-dpenkler@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit When the chip type is 72310 then avoid accessing extended registers Apart from the BSR the 72310 supports only the standard NEC u7210 registers. Signed-off-by: Dave Penkler --- drivers/gpib/ines/ines_gpib.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/gpib/ines/ines_gpib.c b/drivers/gpib/ines/ines_gpib.c index dd98cb261a4c..df299a9d7f4d 100644 --- a/drivers/gpib/ines/ines_gpib.c +++ b/drivers/gpib/ines/ines_gpib.c @@ -103,6 +103,9 @@ static int ines_t1_delay(struct gpib_board *board, unsigned int nano_sec) retval = nec7210_t1_delay(board, nec_priv, nano_sec); + if (ines_priv->pci_chip_type == PCI_CHIP_INES_72130) + return retval; + if (nano_sec <= 250) { write_byte(nec_priv, INES_AUXD | INES_FOLLOWING_T1_250ns | INES_INITIAL_T1_2000ns, AUXMR); @@ -322,6 +325,8 @@ static irqreturn_t ines_interrupt(struct gpib_board *board) spin_lock_irqsave(&board->spinlock, flags); nec7210_interrupt(board, nec_priv); + if (priv->pci_chip_type == PCI_CHIP_INES_72130) + goto out; isr3_bits = ines_inb(priv, ISR3); isr4_bits = ines_inb(priv, ISR4); if (isr3_bits & IFC_ACTIVE_BIT) { @@ -339,6 +344,7 @@ static irqreturn_t ines_interrupt(struct gpib_board *board) if (wake) wake_up_interruptible(&board->wait); +out: spin_unlock_irqrestore(&board->spinlock, flags); return IRQ_HANDLED; } -- 2.53.0